Oh, the merge button works fine, but it would be easier to work with two separate vocabularies.
Managing the vocabulary itself can be done more easily outside of PM (with a text editor).
If I just merge the custom vocabulary into the CVKC I will run into problem when the next CVKC update arrives. At that time I would then have the possibility to either simply remove the old vocabulary and import the new CVKC. If I do that then I will loose all my custom words.
Alternatively, when a new CVKC arrives i can instead merge the new CVKC into the one that is already in use in PM (where there are also custom items). If I do this, then the custom words will not be lost but will remain the the PM vocabulary. However, there will be another problem: What if the 'new' CVKC has been updated with, for example, a changed structure (e.g. change in the sections in the vocab), or some incorrect or obsolete words have been removed. A straight merge of the 'new' CVKC into the vocabulary in PM will not work in that case.
Therefore it would be much better to be able to manage two vocabularies separately:
- the CVKC that are regularly updated by David R
- my custom vocab that I myself update continuously